100% Natural Latex,DIFFERENT POWER LEVELS: There are 5 different resistance levels of professional resistance loop bands: Orange 8-15 lbs, Red 15-35 lbs, Black 25-65 lbs, Purple 35-85 lbs, Green 50-125 lbs. So it is suitable for the public such as beginners, fitness fanatic, Olympic athletes,SAFE AND MULTIFUNCTIONAL: Resistance bands offer effective training, ideal for mastering pull-ups, chin-ups, and power training. Work out your arms, back, legs, and glutes all at once with the mobility band—an excellent choice for body resistance training, yoga, and physical therapy to help strengthen torn ligaments or muscles,DURABLE AND NATURAL: All pull-up bands are made of 100% natural latex—non-toxic, odor-free, anti-slip, and resistant to curling. They are safe, durable. Our exercise bands enhance comfort and wear-resistant performance without losing their elasticity over time,PACKAGE INCLUDING: We offer a free replacement policy, no need to pay any fees and lifetime warranty, no risk at all! Simply contact us via Amazon for any questions or concerns. We will be happy to provide you with comprehensive after-sales service,ENTERTAINMENT AND PORTABLE: Our fitness bands with an user manual and a portable bag, so you can easily know how to use it and carry it to the gym, office, home or take it on your trip. Take your portable bag now and bring your friends to start exercising